cosA=(1-tan^2(A/2))/(1+tan^2(A/2)...

`cosA=(1-tan^2(A/2))/(1+tan^2(A/2)`

cosA=(1-tan^2(A/2))/(1+tan^2(A/2)
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Prove that : (1+sinA-cosA)/(1+sinA+cosA)=tan((A)/(2)).
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सिद्ध कीजिए कि - (i) tan ( 45^(@) - A/2) = (1-sinA)/(cosA) ...
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If sinA = cosA, find the value of 2 tan^(2)A+sin^(2)A-1.
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यदि tan.(A)/(2)=(3)/(2), तो (1+cosA)/(1-cosA) =
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If sin A=a cos B and cosA=b sinB then, (a^2 - 1) tan^2 A+(1 -b^2)ta...
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यदि cos theta =1/2 हो, तो (2 sec theta)/(1+tan ^(2)theta ) का मान ज्...
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prove that (tan A) / ( 1+tan^2A)^2 +(cotA)/(1+cot^2A)^2=sinA cosA.
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Prove that tan"A/2=sqrt((1-cosA)/(1+cosA)
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